86 entries under basic topic. ×

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nub(adjective, original, fundamental, primary)
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root(adjective, original, fundamental, hidden)
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rooter(fundamental, latent)
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specified(adjective, significant, essential, vital)
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unavoidable(adjective, significant, essential, vital)
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veiled(adjective, original, fundamental, hidden)
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APASmart Define. (2016). crucial thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/crucial/thesaurus/synonyms
ChicagoSmart Define. 2016. "crucial thesaurus" https://smartdefine.org/crucial/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, crucial thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/crucial/thesaurus/synonyms>.
MLASmart Define. "crucial thesaurus" 11 March 2016. Web. 23 September 2026. <https://smartdefine.org/crucial/thesaurus/synonyms>